Glitch? What is going on?

Hi and Welcome to the community.

Please let the chocolates reproduce enough chocolate to get the required target. You are finishing them too quickly. Let them reproduce.

Thanks.

Hello Suharik your screenshot shows that you haven't completed the level as you still need to collect two chocolates.

The chocolate on the board at the start of the level isn't all that you need to collect, so clearing the board of chocolate doesn't mean that you have completed the level.

As Aijaziqbal said, chocolate creates more chocolate so you need to make sure that you let the chocolate build up until there is enough to complete the order.